Four pieces of rope of unknown (but equal) length and 10 more feee of rope are attached together. the resulting rope is 30 feet long draw a diagram to represent this problem

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.